captioning sponsored by macneil/lehrer productions >> woodruff: on this labor day, president obama in michigan called on congress to create new jobs, while republican presidential contenders wooed voters in south carolina. good evening. i'm judy woodruff. >> brown: and i'm jeffrey brown. on the newshour tonight, we get the highlights from today's events, the unofficial start of the 2012 campaign. plus, newshour political editor david chalian assesses what's at stake in the week ahead. >> woodruff: then, ray suarez examines the state of labor unions on this day honoring americans at work. >> a lot of the challenges that workers and unions are facing come from a sustained attack on workers from business and from public policy. >> in a competitive marketplace there's very little power to raise workers' wages because the companies can't pass it on to the consumers. >> brown: veteran foreign correspondent edward girardet offers personal reflections and stories from his new book on three decades of war reporting in afghanistan. >> woodruff: and we close with powerful remembrances of 9/11, from the p